I updated the BIOS - now the laptop will not start.

If a BIOS corruption error occurs, you may not even notice the blink codes, because as soon as the computer recognizes the error, it restarts, attempts to recover the BIOS, and then restarts again. You might notice an extra-long startup process as a result, and a message indicating that the BIOS has been recovered may display on startup. If this occurs, update the BIOS on the computer. For more information, see Updating the BIOS.

If the computer does not automatically recover the BIOS, manually perform a BIOS recovery by following these steps:

Turn off the computer.

Plug the notebook into power using the power adapter.

While the computer is still off:

Press and hold the Windows key and the B key at the same time, and then press and hold down the Power button on the notebook for one second.

Release the Power button and the keys.

By following these steps the BIOS will reach the EFI partition in order to recover the BIOS to the last known good version of the BIOS from the hard drive.